Metal stock



llo Drawing.

Patented 5i cum-3o STATES.

imwxonx To all whom it may concem: I

Be it known that I, ANDREW M. HUNT, a citizen of the United States,residing at Niagara Falls, in the county of Niagara and State of NewYork, have invented-certain new and useful Im rovements in Metal Stock,of which the ollowing is a specification. Y

My invention relates to a metal stock and the production thereof, usefulfor various purposes. but more particularly in connection withthedeoxidation and purification of molten 'metals such as iron orsteel'and nickel.

One of the objects of theinvention is the production. of'a. metal. stockcomprismg a plurality of metal ingredients united by subjecting amixture of the commmuted metals to high pressure.

Another object of the invention is theutilization of this briquettedmaterial for treating molten metals such as iron or steel and nickel.

As a specific illustration of the-application of my invention, I maytake 10-20 parts of powdered magnesium and mix the same with, 9080 partsrespectively of powdered ferro-silicon or a mixture of powderedferro-silicon and ferro-maganese.

.The magnesium mixture is then subjected to heavy pressure in a die'forthe purpose of forming -a coherent briquet. Pressures as f high as40,000 pounds per square inch have been found suflicient to'cause the-ingredi-,

ents to cohere. At this pressure the magnesium, on account of being thesofter of the two metals and possesslng suificlent plasticity, will flowaround and be uniformly disseminated between the harder and less plasticiron particles causing the ingredients to cohere in a firm hard briquet.If the 'mixture is subjected to 'a; temperature of about 300 degrees C.lower pressures may be employed in forming the briquet.

A-specific application of the utility of the magnesium-iron briquet isin connection I 4 with the deoxidation of molten iron or steel.

It is well known that magnesium is an efli'-' cient deoxidizer of molteniron, but limita-- tions of its use heretofore have/been dictated by theviolence; of the reaction which takes place on adding the magnesium,causing the molten metal to be projected out of the holding receptacle.1 The obvious expedient would be to add the magnesium in a diluted I1,555,978'1 PATENT' OFFICE.

mnnnw 1r. HUNT, or NIAGARA FALLS, nnw Yonx, assrenon TO amnnrcanmnenns'mm conrona'rron, or NIAGARA FALLS, NEW YORK, A. oonnona'rron orMETAL STOCK.

Application med August as, '1920. Serial 1%. 406,219.

form this diminishing the violence of the reaction; but the usual methodof attaining this end, such as alloying themagnesium with iron underfavorable conditions'cannot be availed of on account of the fact thatbriquet therefore has its specialutility in this connection in thatsmall quantities of magnesium may be added to the molten iron withoutany of the above mentioned dis- 1 these metals do not readily alloy.;My-

advantages in carrying out this operation.

ess of refining iscarried on. Theaddition of magnesium to the moltennickel before casting the anode, obviates this disadvantage by theelimination of blowholes. The magnesium is added in the form of anickelmagnesium briquet. This briquet is made in the same manner as theiron magnesium brlquet, nickel belng alloy in the mlxture.

While I have described the application of my invention in connectionwith magnesium' substituted for the iron and iron alloys and nickel, itis obvious that 1 other mixtures of metals possessing the necessaryphysical characteristics might be substituted for the metals named.

From the above description it will be apparent that 'I' have produced anarticle of the character described, which possesses the charactericsenumerated as desirable, and while I have disclosed the preferred formof and method of using my invention, it will be understood that Ireserve the right to .all changes properly falling within the spirit andscope of the appended claims.

I- claim: i

' 1. As a composition of matter, amechanical mixture of metals in theform of a compressed coherent mass and comprising dis- I seminatedmagnesium.

2. As a composition of matter, a uniform mechanical mixture of metalscomprising magnesium and iron in the form of'a compressed coherent mass.A

3. As acomposition of matter, a uniform mechanical mixture of metalscomprisin magnesium and ferro-silicon in the form 0 a com ressedcoherent mass. 4. s an article of -1nanufacture,-a compressed metalbriguet comprising a uniform mixture of hard ferrous and non-ferrousmetals, the latter being relatively soft and plastic and acting as abinder for the former.

5. As an article of manufacture, a compressed metal briquet made up of amixture of metals comprising magnesium and other relatively hard andnon-plastic metals, the magnesium acting as a binder for the othermetals.

6. The method of briquetting magnesium with a relatively harder and lessplastic metal, comprising subjecting a mixture of the said metals inpowdered form to a high degree of pressure whereby the magnesium willflow around and weld together the relatively harder ingredients.

7. As a com osition of matter, a uniform mechanical mixture of metalscomprising magnesium, ferro-silicon and ferro-manganese in the form of acompressed coherent mass.

8. As a composition of matter, a mechanical mixture of metals comprisingmagnesium in the form of a compressed coherent mass.

t In testimony whereof I afiix my signaure.

ANDREW M. HUNT.

